Hurricane!

Japan, a leader in reducing carbon dioxide emissions while growing its economy, saw the first fuel cell train tests.

Hydrogen, which is stored in a tank aboard the train, is supplied to the fuel cells, where it reacts with oxygen to produce electricity. Unused electricity and electricity generated during braking is stored in a secondary battery, which is used as an auxiliary power source. In addition to being energy-efficient, hydrogen fuel cells emit no carbon dioxide (a contributor to global warming), only water.